In the previous episode, Isaac talks about the time he possessed one of Hetty's workers while the mansion was being wired for electricity. In this one, while talking about Ohio, Hetty mentions President Rutherford B. Hayes. This marks Hetty's death as sometime between 1881 and 1883.
While discussing Sam's accident, Sam's dead mother believes, at first, that a ghost pushed her. This is a reference to the original BBC version, where the protagonist is indeed pushed out a window by the pants-less ghost.
Jay bragging about solving the Saturday crossword puzzle in ink refers to the fact that in daily newspapers, the syndicated Monday puzzle is the easiest and they get more difficult as the week progresses. With Saturday being the hardest and Sunday being mixed difficulty levels.
The Mojitown restaurant is actually the 3 Amigos restaurant in Greenfield Park.